Good evening. Today there was a political earthquake in the presidential race and all because of a small camera secretly recording from the side of a room. It was a private fund-raiser for governor mitt romney. He was talking to some of his wealthy donors and now republicans and democrats are debating the fallout from the tape and the romney campaign is on fall-on damage control with just 49 dice go before your voice, your vote. Abc's david muir who covers the romney campaign starts us right now. Good evening. The campaign telling me romney has not watched the whole tape itself. But it's been posted in its entirety. A question asked of romney, how do you convince everybody that they have to take care of themselves led to one of the answer. Mitt romney on the tarmac with his grandchildren today -- giving them a tour of the campaign plane. Welcome images, as romney's campaign works to shake off other ones. Captured in that video showing romney speaking to wealthy donors at a fund raiser in boca raton, florida. Tonight the video out in its entirety. Romney making the argument that nearly half of the americans believe they're victims. Saying his job is not to worry about those people. There are 47% of the people who will vote for the president no matter what. There are 47% who are with him, who believe they are victims, who believes the government has a responsibility to care for them. Who believe they are entitled to house care, food, to housing, to you name it. And they will vote for this president no matter what. Romney tells americans 47% of americans don't play income tax. My job is not to worry about those people unless they take personal responsibility and care for their lives. What I have to do is convince the 5% to 10% that are in the center. Reporter: Last night a press conference with a tense smile from a candidate doing damage control. Good evening. I understand there's a video on the internet. Reporter: Romney standing by what he stated. It's not eloquently stated. I'm speaking off the dmuf response to a question. I'm sure could state it more clearly and more effective way than in a setting like that. Reporter: In the video romney plans to go after in his word the 5% or 6% of indeponents that he needs. Who voted for obama last night. Because they voted for him they don't want to be told he's a bad guy. Reporter: Offering what they want to hear. They want to believe they did the right thing but he wasn't up to the task. Reporter: And then a joke, romney pointing out his father a one-time governor of michigan was born in mexico to american parents. Said had his dad been born to mexican parents woe have a better chance of whipping. He was born in mexico had he been born of mexican parents i would have a better shot of whipping this thing. Reporter: He shares the strategy of carefully deploying his wife ann. Use ann sparingly so people don't get tired if her. Reporter: Romney himself asked about the response from the obama campaign. You wrote off half the nation. How did you respond to that? Well, we of course talking about a campaign and how he's going to get close to half the vote. I'm going to get half the vote, approximately. I hope I want to get 50.1% or more. Reporter: I asked the campaign if they're concerned how the video might play among the persuadables, independent voters. You heard the president said in romney's words in over his head. The campaign adviser said they're not concerned about the video they're trying to persuade them by what they say matters most, the economy. This was a big day.

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